@book{21437,
	author = {NIEWADZI, Czesław},
	title = {Zagadnienia usług w teorii ekonomii /},
	year = {1979.},
	address = {Warszawa,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=21437}
}